Wrench



Feb. 14, 1928.

T. M. FOSS WRENCH Filed 001;. 1,925

[Eu en for 720mm: flarfihfm 3 4/3 14370 rne s Patented Feb. 14, 1928.

rmn' BUR-R MI. COLE, 0F IrIINIFEi-LPO J'S, I'IIINNE$OTA.

\VRENCH.

Application filed Gctoher 9, 1925.

My presentinvention has for its provioe an extremely simple and highlyefficient quick-acting wrench, and to this end it consists of the noveldevices and combinations of devices hereinafter described and defined inthe claims.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

eferring to the drawings:

Fig. 1 is a side elevation of the invention embodied in a pipe wrench;

ig, 2 is a view corresponding to Fig. l, but showing certain of theparts in section and Fig. 3 is a fragmentary view corresponding to Fig.1 but illustrating the invention embodied in a monkey wrench.

Referring first to the invention as illustrated in Figs. 1 and 2, thenumeral 1 indicates the bar-like body of a pipe wrench that isrectangular in cross section. On one end of the body 4 is a fixed jaw 5and the other end thereof affords a handle 6. Cooperating with the fixedjaw 5 is a movable jaw 7 having a passageway 8 through which the body 4extends and supports said jaw for sliding adjustment toward and from thefixed jaw 55. The size of the passageway 8 is such as to hold themovable jaw 7 against lateral or turning movements on the body 4 butwith freedom for slight rocking movement toward and from the fixed jaw5.

A multiplicity of longitudinally teeth 9 are formed with the body a, andmesh ing with said teeth is a toothed wheel 10 mounted in a recess 11 inthe back or one end of the movable jaw 7 and journaled thereto at 12.This toothed wheel 10 also affords a pivot on which the rocking jaw 7 isfree for movement in the arc of a circle with the axis of said wheel asthe center.

For locking the toothed wheel 10 against rotation in a direction topermit a movement of the movable jaw 7 away from the fixed jaw 5 butpermit free movement thereof toward said fixed jaw, I provide a pair ofspring-pressed dogs 13. These dogs 13 are located within the recess 11,loosely mounted on a common pivot 14 secured to the movable jaw 7 andarranged to alternately move into and out of interlocking engagementwith the toothed, whee? forward of its pivot object to spaced Serial No.81,481.

yustment;

Formed with the dogs 13 are releasing levers 15 that extend outward ofthe recess 11, substantially parallel to the body 1, and the arrangementof said levers is such that the one on the dog 13, having interlockinengagement with the toothed tends outward of the other lever so that thesame may be readily operated to release the respective dog withoutoperating the other lever 15.

A fixed face plate 16 is attached to the fixed 5 by a single screw 17and a transversely extended rib and slot connection 18, which securelyholds said plate against turning movement on the screw 17. The rib ofthe connection 18 is rigidly secured to the fixed jaw 5, and the slotthereof is formed in said plate. The movable jaw 7 is provided with aface plate 19 pivoted thereto at 20 for av rocking movement in the planeof the rock ing movement of said jaw. This rocking face plate 19 willautomatically adjust itself onto a pipe or other object held -by thejaws 5 and 7.

From the above description it is evident that the movable jaw 7 may befreely slid toward the fixed jaw 5, and at which time the toothed wheel10 will be rotated by its engagement with the fixed teeth 9 and moveover the dogs 13 with a ratchet-like action. When the movement of themovable jaw 7 is stopped by its engagement with a pipe or other objectto which the wrench is to be ap plied, one of the dogs 13 will beinterlocked with the toothed wheel 10 to prevent backward rotationthereof and lock said jaw where set. To release the wrench from theobject to which it is applied it is only necessary to depress theoutermost lever 15 to raise the respective dog 13 and thereby releasethe toothed wheel 10. At the time the outermost lever 15 is depressed,the other of said levers will be held by the operator to prevent therespective dog 13 from moving n o interlocking -t engagement toothedwhea 18.

With the lot the wheel 10, ex

heldout ot interlocking engagement with the toothed wheellO, the movablej aw 7 may be freely slid on the body t away from the Referring now tothe invention as illusti atedin Fig, 3,-the-nume'ral 21 indicates thebar-like bodvof a monkey wrench, on one end of which is a fixed jaw 22and on the other end of which is applied a handle'23.

{Jo-operating with the fined jaw. is amovablejaw Qshdably mounted on thebody 21. Ermedw1th' the body 21 1s a nijt ltipliolt'y oitlon itndinallyspaeed teeth25 with-w ich the. back thereof.

mesh. "toothed wheel 26, loosely'jonrnaled on, a. p vot pin 217 carriedbythe movable jaw 2e] and located in a recess 28 torn'ied inCircnmterentially spaced lock dogs 2 9, located in the recess28 andmounted on a: common pivot pin 30., are; ar-

ranged to; alternately moveintoand out, of

inteiloclsing engagement with toothed hee 2.6, andthereby locljz the.same against .rotation by a, movement otthe movable jaw 25;. ewayitemthe. fixeclfjaw 22 but to, move over the too lied wheelieWltltaljdllfilliit-lllifl action during the movement of; the jaw 24toward; the fixed jaw 22: Releasing levers 31 are formed with the lockdogs 29;

.the. movable,

tvfixedjaw and ace-operating'niovable jaw,

thelatter of which. is slidablymounted on the, body, there being teethon the; body, a toothed, wheel jonrnaled on the movable jaw at the endthereof and meshing with said teeth, .anida spring-pressed dog mountedon a-wi'or COrOPQlfitlOH with the toothed wheel, said movable aw beingfree r'or rocking movementonthe toothed wheel l. the latter 'ot which,is slidabl V thebody, thereb ng teeth on thebody sa1d e or 1,658,890

in the arc of a circle with the axis of said wheel as the center whilesaid dog is interlocked with the toothed wheel.

2. A wrench comprising a body having a fixed jaw and a .co-operatmgmovable aw,

the latter of which is slid-ably inonntedon 7 said body, there beingteeth onthe body, a toothed wheel jonrnaled on the inovable aw andmeshingwith said teeth, and a pair of circumterentially spaced springdogs monnted on the movable jaw and arranged to til ternately move intoand out of interlocking engagement Wlllllil'lfl toothed wheel with aratchetelilze action by a movement of the movable jaw towardthe;fixedfjaw, said dog having levers tor'releasing the sameand whichleversare so arranged that the-one on the dog having interlockingengagement with the st eothed wheel extends outwards I of the heroilsaid' levers.

3, A wrench cemptifslll heed jaw and a. co-ope'l n abody hev i movablejaw he. 0 in its bilClflfln ree ss, a

toothed, wheel mounted in the recess, 1011f naled on said jaw andmeshing with said teeth, and a pair of circnmferentially spacedspring-pressed dogs mounted on themovable jaw; in. its recessand on acommon axis and arranged to alternately move into and out ofinterlocking engagement, with the, toothed wheel, said dogs havingleverstonreleasing the, same, extending outward of: tie recess and.arranged so that the one on the dog having interlocking engagement withthe toothed wheel extends outward of the other oi said levers,'sa:idmovable jaw being free or rocking movement on the toothed wheel in theare of a c rcle with the of said wheel as the center.

Intestimony whereof Iaflii: my signature.

In-ones. MARTIN FOSS.

